Coal seam group filling mining method using drilling, adjusting and filling integrated device

Abstract

The application discloses a coal seam group filling mining method using a drilling, adjusting and filling integrated device and relates to the technical field of coal mine filling mining. The method solves the technical problems that the existing device cannot safely complete the complete process of drilling filling mined-out areas, the construction time of drilling filling mined-out areas is long, and resource input is large. The method mainly comprises the following steps: after a column mining method is used to complete mining of a lower coal seam of very close distance coal seams, when a wall mining method is used to start tunneling and mining a roadway of an upper coal seam, drilling, adjusting and filling integrated devices with drilling, casing, pressure adjusting and filling functions are used to perform drilling detection, pressure adjusting and filling on mined-out areas below the roadway, in front of the lower coal seam and in the middle area of the lower coal seam, so that the mined-out areas are filled more safely, conveniently and economically in the process of tunneling and mining the roadway of the upper coal seam, and the influence of the mined-out areas of the lower coal seam on mining of the upper coal seam is reduced. The mining method reduces the influence of the mined-out areas of the lower coal seam on mining of the upper coal seam.

Description

Technical Field

[0001] This invention relates to the field of coal mine backfilling mining technology, specifically to a coal seam group backfilling mining method using an integrated drilling, adjustment and backfilling equipment. Background Technology

[0002] my country has a large number of closely spaced coal seams. Due to past limitations in mining technology, the lower coal seam was often mined using pillar-type mining. With improved mining technology, the upper coal seam will now be mined using wall-type mining. However, since the lower coal seam has already been mined, there is often a situation of working in the goaf when mining the upper coal seam, which can easily lead to poor stability and maintenance difficulties in the upper coal seam's return roadway and working face, seriously affecting mine production safety. Goaf backfilling can effectively reduce the subsidence of the lower coal seam roof (upper coal seam floor) and reduce the impact of the lower coal seam goaf on the upper coal seam's return roadway. However, the coal pillars left in the goaf have a long oxidation time and accumulate a lot of heat. In addition, the air pressure in the goaf is unstable. If the goaf is directly filled by connecting the roadway and the goaf through boreholes, when the air pressure in the goaf is greater than that in the roadway, harmful gases in the goaf are likely to rush into the roadway along the boreholes, threatening the lives of workers. When the air pressure in the goaf is less than that in the roadway, air in the roadway is likely to rush into the goaf along the boreholes, causing the coal resources left in the goaf to spontaneously combust.

[0003] Furthermore, there is currently no multi-functional equipment that can safely complete the entire process of borehole filling of goaf areas. The construction time for borehole filling of goaf areas is long and the resource investment is large.

[0004] This shows that the existing technology needs further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a coal seam group backfilling mining method using integrated drilling, adjustment and backfilling equipment, which can backfill goaf areas more safely, conveniently and economically, improve the stability of the upper coal seam mining roadway when mining coal seams in close proximity, and ensure the safe operation of backfilling in the mining area.

[0006] To achieve the above objectives, the technical challenge that this invention needs to overcome is: how to safely, conveniently, and economically fill the goaf of the lower coal seam when using the wall-mounted mining method in the upper coal seam, and improve the stability of the upper coal seam mining roadway and working face.

[0007] To overcome the above-mentioned technical difficulties, the present invention adopts the following technical solution:

[0008] A method for backfilling mining of coal seams using integrated drilling, adjustment, and backfilling equipment includes the following steps:

[0009] a. Based on the conditions of the goaf in the lower coal seam, set reasonable drilling points and drilling sizes;

[0010] b. Excavate a mining roadway in the upper coal seam and lay a filling pipeline in the excavated roadway. When the first drilling point is reached, stop the excavation and set up an integrated drilling, adjustment and filling equipment. The integrated drilling, adjustment and filling equipment includes a frame and a traveling mechanism located below the frame. The frame is equipped with a fan compartment, a nitrogen compartment, a filling compartment, a cuttings compartment, a hydraulic compartment, a hydraulic rod, a drilling rig and a filling machine.

[0011] The nitrogen chamber is used to supply nitrogen to the fan chamber; the fan chamber is used to deliver the nitrogen supplied by the nitrogen chamber to the coal seam goaf with the airflow; the filling chamber is used to supply filling slurry to the filling machine; the cuttings chamber is used to collect the cuttings generated during the drilling process; the hydraulic chamber is used to provide power to the hydraulic rod; the hydraulic rod is used to control the movement of the drilling rig or the filling machine; the drilling rig drills holes by moving; the filling machine fills the coal seam goaf with slurry; the filling machine is equipped with an air pressure level gauge.

[0012] c. Control the drilling rig to drill through the hydraulic rod until the drill bit passes through the rock strata between the upper and lower coal seams, and then pull out the drill bit;

[0013] d. The filling machine is controlled by a hydraulic rod to extend into the borehole. A casing is installed around the drill bit of the drilling rig, and grouting is performed between the casing and the rock wall.

[0014] e. After the drilling is completed, observe whether the air pressure in the lower coal seam goaf area is consistent with the air pressure in the upper coal seam roadway using the air pressure level instrument. Adjust the air pressure in the lower coal seam goaf area to be equal to the air pressure in the coal seam roadway.

[0015] f. After the air pressure is adjusted, filler slurry is supplied to the filling machine through the filling chamber. The filling machine is then started to fill the goaf of the lower coal seam.

[0016] g. After pressurizing and filling the borehole, adjust the angle of the drilling rig using the hydraulic rod, and repeat steps b to f to complete the construction of the inclined borehole in the middle of the goaf.

[0017] h. After pressurizing and filling the borehole, adjust the angle of the drilling rig using a hydraulic rod, and repeat steps b to f to complete the construction of the inclined borehole for detecting the goaf area ahead of the roadway.

[0018] i. After all the work at one borehole point is completed, the roadway continues to be excavated to the next borehole point for borehole exploration, air pressure adjustment and filling of the goaf.

[0019] j. Repeat step i until one mining roadway in the upper coal seam is excavated;

[0020] k. After one mining roadway in the upper coal seam is completed, another mining roadway is excavated according to the same steps, and the goaf of the lower coal seam is filled.

[0021] The beneficial technical effects directly brought about by the above technical solution are as follows:

[0022] After the lower coal seam of a very close coal seam is mined using the pillar mining method, when the upper coal seam is mined using the wall mining method and the roadway is being excavated, as the excavation progresses, an integrated drilling, casing, pressure regulation, and filling equipment is used to drill, explore, adjust air pressure, and fill the goaf areas below the roadway, in front of the lower coal seam, and in the middle area of ​​the lower coal seam. This allows for safer, more convenient, and more economical filling of the goaf areas during the excavation of the upper coal seam roadway, reducing the impact of the goaf areas of the lower coal seam on the mining of the upper coal seam.

[0023] In the above-mentioned method for coal seam filling mining using integrated drilling, adjustment and filling equipment, step a involves using a detection radar to determine the condition of the goaf in the lower coal seam.

[0024] The aforementioned method for coal seam filling mining using integrated drilling, adjustment, and filling equipment includes a nitrogen chamber comprising a nitrogen chamber door, a high-pressure nitrogen cylinder, and a high-pressure gas diffuser. Nitrogen gas is diffused to the fan chamber via the high-pressure gas diffuser. The fan chamber is located above the nitrogen chamber and includes a fan, an adjustable air window one, and an adjustable air window two. The fan can rotate in both directions, and the adjustable air windows one and two are positioned opposite each other. An adjustable ventilation opening is provided in the cuttings chamber.

[0025] The above-mentioned method for coal seam filling mining using integrated drilling, adjustment and filling equipment includes a filling chamber adjacent to the ventilation chamber. The filling chamber includes a filling chamber door, a filling pump, a first pipeline and a valve. The second pipeline is connected to the filling machine, and the valve controls the opening and closing state of the first pipeline.

[0026] In the above-mentioned coal seam group backfilling mining method using an integrated drilling, adjustment and backfilling equipment, the cuttings chamber and the hydraulic chamber are located on the same side of the backfilling chamber, and the cuttings chamber is located above the hydraulic chamber. A certain amount of water is provided in the cuttings chamber, and the drilling rig and the cuttings chamber are connected through a second pipe, with one end of the second pipe extending below the water in the cuttings chamber.

[0027] The above-mentioned method for coal seam filling mining using integrated drilling, adjustment and filling equipment includes a hydraulic silo comprising a hydraulic oil tank, a hydraulic pump, a flow control valve and a pressure control valve, wherein the hydraulic pump is connected to a hydraulic rod.

[0028] The above-mentioned method for coal seam filling mining using an integrated drilling, adjustment and filling equipment, wherein the drilling rig is located on one side of the integrated drilling, adjustment and filling equipment, the drilling rig includes a locking device and an annular air duct, the annular air duct being connected to a pipeline; the locking device is used to fix the casing around the drill bit.

[0029] The above-mentioned method for coal seam filling mining using integrated drilling, adjustment and filling equipment includes a hydraulic rod comprising a horizontal rod 1, a horizontal rod 2, a vertical rod 1, a vertical rod 2, a vertical rod 3, a drilling rig connecting rod, a filling machine connecting rod, and a hydraulic rotating mechanism. The horizontal rod 1 and the horizontal rod 2 are parallel to each other, and the vertical rod 1, the vertical rod 2, and the vertical rod 3 are arranged side by side and are all perpendicular to the horizontal rod 1 and the horizontal rod 2. The drilling rig connecting rod is located between the vertical rod 1 and the vertical rod 2, and the filling machine connecting rod is located between the vertical rod 2 and the vertical rod 3.

[0030] In the above-mentioned method for coal seam filling mining using integrated drilling, adjustment, and filling equipment, in step e, when the air pressure in the coal seam goaf is inconsistent with the air pressure in the upper coal seam roadway, if the air pressure in the coal seam goaf is greater than the air pressure in the upper coal seam roadway, then the adjustable ventilation opening is closed, and the fan is adjusted to rotate forward until the air pressure in the coal seam goaf is consistent with the air pressure in the upper coal seam roadway; if the air pressure in the coal seam goaf is less than the air pressure in the upper coal seam roadway, then the adjustable ventilation opening is closed, the high-pressure nitrogen cylinder and high-pressure gas diffuser are opened, and the fan is adjusted to rotate forward until the air pressure in the coal seam goaf is consistent with the air pressure in the upper coal seam roadway.

[0031] In the above-mentioned method for coal seam filling mining using an integrated drilling, adjustment, and filling equipment, a windbreak is installed above the drilling rig.

[0032] Compared with the prior art, the present invention brings the following beneficial technical effects:

[0033] (1) This invention proposes a coal seam group filling mining method using an integrated drilling and filling equipment, which fills the goaf of the lower coal seam, effectively improving the stability of the upper coal seam mining roadway, reducing the roadway deformation, and reducing the impact of the goaf of the lower coal seam on the mining of the upper coal seam.

[0034] (2) The use of integrated drilling, adjustment and filling equipment for drilling exploration, adjusting air pressure and filling goaf operations saves on operating costs and makes the various processes of goaf filling more economical, convenient and safe.

[0035] (3) The use of gangue paste for filling reduced filling costs, consumed mine gangue, protected the ecological environment, and achieved green development of the mine. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] Figure 1This is a schematic diagram of the integrated drilling, adjusting, and charging equipment of the present invention;

[0038] Figure 2 This is a front view of the filling chamber of the present invention;

[0039] Figure 3 This is a schematic diagram of the windbreak structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the hydraulic rod structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the locking device structure of the present invention;

[0042] Figure 6 This is a schematic diagram of the filling machine structure of the present invention;

[0043] Figure 7 This is a schematic diagram of the wind pressure level instrument of the present invention;

[0044] Figure 8 This is a schematic diagram of the cross-section of the drill bit of the present invention;

[0045] Figure 9 A schematic diagram of coal seam mining before tunnel construction;

[0046] Figure 10 This is a schematic diagram of coal seam mining during tunnel excavation.

[0047] Figure 11 This is a schematic diagram of coal seam mining after the tunnel is completed.

[0048] Figure 12 Left view of coal seam mining before tunnel construction;

[0049] Figure 13 Left view of coal seam mining after the tunnel is completed;

[0050] In the picture:

[0051] 1. Adjustable air vent one; 2. Fan; 3. Adjustable air vent two; 4. Nitrogen chamber door; 5. High-pressure nitrogen cylinder; 6. High-pressure gas diffuser; 7. Filling chamber door; 8. Filling pump; 9. Adjustable vent; 10. Cuttings chamber door; 11. Pipe two; 12. Hydraulic oil tank; 13. Hydraulic pump; 14. Flow control valve; 15. Pressure control valve; 16. Hydraulic rod; 161. Horizontal bar one; 162. Horizontal bar two; 163. Vertical bar one; 164. Vertical bar two; 165. Vertical bar three; 166. Drilling rig connecting rod; 167. Filling machine connecting rod; 168. Hydraulic rotation. 17. Drilling rig; 18. Annular air duct; 19. Locking device; 20. Drill bit; 201. Locking bolt; 21. Traveling mechanism; 22. Wind baffle; 221. Wind baffle front cover; 222. Wind baffle top cover; 223. Wind baffle rear cover; 224. Wind baffle shoulder cover; 23. Filling pipe interface; 24. Pipe one; 25. Valve; 26. Pipe three interface; 27. Horizontal screw feeder; 28. Vertical screw feeder; 29. ​​Agitator; 30. Pressure measuring chamber; 31. Air pressure gauge; 32. Level; 33. Sliding block; 34. Drill bit wall; 35. Rock jamming movable block. Detailed Implementation

[0052] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0053] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0054] In the description of this application, the words "first," "second," etc., are used only to distinguish different objects and do not limit the quantity or order of execution, nor do they imply that they must be different. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0055] The technical solution of this application will be further described in detail below with reference to the accompanying drawings.

[0056] After the lower coal seam of a very close coal seam is mined using the pillar mining method, the upper coal seam is mined using the wall mining method. When the excavation of the recovery roadway begins, the existing technology lacks a device that can simultaneously perform drilling, casing, pressure regulation, and filling functions. Therefore, this application addresses this technical problem by proposing an integrated drilling, casing, pressure regulation, and filling device that can simultaneously perform drilling, casing, pressure regulation, and filling functions. This device can be used to perform a series of operations such as drilling, pressure regulation, and filling in sequence, and can be operated continuously throughout the entire process.

[0057] Combination Figures 9 to 13 As shown, the width of the coal room in the lower coal seam pillar mining is assumed to be a meters, the width of the goaf is b meters (the width of the coal pillar), and the length of the goaf is c meters.

[0058] The distance between the upper and lower coal seams is d meters, the section length is e meters, and the width of the upper coal seam mining roadway is f meters.

[0059] The probe boreholes extending into the tunnel were drilled at angles of 90 degrees and α degrees. The lengths are d meters and g meters.

[0060]

[0061] The borehole angle reaching the middle of the goaf in the lower coal seam is β degrees. The length is h meters.

[0062]

[0063] like Figure 1 As shown, the main components of the drilling, adjustment and filling integrated equipment of the present invention are: a frame and a traveling mechanism 21 located below the frame. The traveling mechanism 21 is a tracked traveling mechanism. The frame is equipped with a fan chamber, a nitrogen chamber, a filling chamber, a cuttings chamber, a hydraulic chamber, a hydraulic rod 16, a drilling rig 17 and a filling machine.

[0064] The fan compartment is located above the nitrogen chamber and includes a fan 2, an adjustable air window 1, and an adjustable air window 2. The fan can rotate in both directions. The adjustable air windows 1 and 2 are positioned opposite each other. When the fan rotates in the forward direction, air is drawn in from the left and discharged from the right. When the fan rotates in the reverse direction, air is drawn in from the right and discharged from the left.

[0065] The nitrogen chamber is used to supply nitrogen to the wind turbine compartment. The nitrogen chamber includes a nitrogen chamber door 4, a high-pressure nitrogen cylinder 5, and a high-pressure gas diffuser 6. The high-pressure nitrogen cylinder 5 stores high-pressure nitrogen. The nitrogen chamber is connected to the wind turbine compartment. The high-pressure nitrogen cylinder provides high-pressure nitrogen, which is released into the wind turbine compartment through the high-pressure gas diffuser. The nitrogen then flows from the wind turbine compartment through the filling chamber, pipeline 3, filling machine, and finally to the borehole and goaf area.

[0066] like Figure 2 As shown, the filling chamber is adjacent to the blower chamber. The filling chamber includes a filling chamber door 7, a filling pump 8, a first pipeline 24, a filling pipeline interface 23, and a valve 25. The second pipeline is connected to the filling machine, and the valve controls the opening and closing status of the first pipeline.

[0067] The cuttings chamber and the hydraulic chamber are located on the same side of the filling chamber, with the cuttings chamber above the hydraulic chamber. The cuttings chamber includes a door 10 and contains a certain amount of water, with the water level exceeding half the height of the chamber. This water collects the cuttings generated during drilling. The drilling rig and the cuttings chamber are connected by a second pipe 11, with one end of the second pipe extending below the water level inside the cuttings chamber. An adjustable ventilation opening 9 is provided in the cuttings chamber.

[0068] The hydraulic chamber includes a hydraulic oil tank 12, a hydraulic pump 13, a flow control valve 14, and a pressure control valve 15. The hydraulic pump 13 is connected to the hydraulic rod 16, and the hydraulic rod is driven to move through the hydraulic pump 13.

[0069] like Figure 4 As shown, the hydraulic rod includes a horizontal rod 161, a horizontal rod 2 162, a vertical rod 163, a vertical rod 2 164, a vertical rod 3 165, a drilling rig connecting rod 166, a filling machine connecting rod 167, and a hydraulic rotating mechanism 168. Horizontal rods 1 and 2 are parallel to each other, and vertical rods 1, 2, and 3 are arranged side-by-side and perpendicular to horizontal rods 1 and 2. The drilling rig connecting rod is located between vertical rods 1 and 2. Vertical rods 1, 2, and 3 can move left and right on horizontal rods 1 and 2. The filling machine connecting rod is located between vertical rods 2 and 3. Both the drilling rig connecting rod and the filling machine connecting rod can move up and down on vertical rods 1, 2, and 3. The filling machine fills the coal seam goaf with slurry. The filling machine is equipped with an air pressure level, such as... Figure 7 As shown, the wind pressure level includes a wind pressure gauge 31, a level 32, and a slider 33.

[0070] The drilling rig is located on one side of the integrated drilling, adjusting, and charging equipment. The rig drills by moving. It includes a locking device 19, an annular air duct 18, a motor, and a second pipe. The annular air duct is connected to the second pipe. The locking device is used to fix the casing around the drill bit 20. The casing and drill bit drill simultaneously. A baffle fills the gap in the casing, and grout fills the gap between the casing and the rock wall. The locking device is as follows: Figure 5 As shown, it is connected to the motor via a central bolt, and has cylindrical and annular air ducts around its perimeter. Inside, locking bolt 201 connects the locking device to the drill bit, and pipe two connects the drilling rig to the cuttings chamber. (See diagram) Figure 8 As shown in the cross-sectional view of the drill bit, the drill bit wall 34 and the rock-sticking block 35 can be seen. The rock-sticking block 35 is located on the drill bit wall 34.

[0071] like Figure 6 As shown, the filling machine includes a three-way pipe interface 26, a horizontal screw feeder 27, a vertical screw feeder 28, a mixer 29, and a pressure measuring chamber 30. The three-way pipe interface 26 is connected to the third pipe, and the other end of the third pipe is connected to the filling chamber.

[0072] like Figure 3As shown, the wind hood 22 includes a front wind hood 221, a top wind hood 222, a rear wind hood 223, and a shoulder wind hood 224. The front wind hood is located above the top wind hood, and the shoulder wind hoods are located on both sides of the equipment. Before adjusting the wind pressure, the front wind hood and the shoulder wind hood are rotated to the front and sides of the drilling rig and the filling machine to form a closed space to block the airflow.

[0073] This invention discloses a method for coal seam backfilling mining using an integrated drilling, adjustment, and backfilling equipment, comprising the following steps:

[0074] Step 1: Use radar to investigate the conditions of the goaf in the lower coal seam, and set reasonable drilling points and sizes based on the conditions of the goaf in the lower coal seam.

[0075] Step 2: Excavate a mining roadway in the upper coal seam and lay backfilling pipelines in the newly excavated roadway; stop excavation when reaching the first drilling point, move the integrated drilling, adjustment, and backfilling equipment to the drilling point, and use the locking device at the bottom of the drilling rig to lock the drill bit and casing onto the drilling rig; use hydraulic rods to control the up and down movement of the drilling rig to drill in the floor. During the drilling process, the blower reverses, and the drilling cuttings generated are sucked into the cuttings bin using the air ducts and pipelines on the drill bit and drilling rig.

[0076] Step 3: When the drilling depth reaches 4 / 5 of the drill bit length, stop drilling, attach a drill pipe and casing of the same size above the drill bit, and then continue drilling. Repeat the above steps until you have drilled through the coal seam and the rock strata between the lower and upper coal seams;

[0077] Step 4: After the rock strata between the upper and lower coal seams are drilled through, the casing is fixed at the borehole opening, and then the drill bit is pulled out.

[0078] Step 5: After the drill bit is pulled out, quickly adjust the hydraulic rod to extend the filling machine into the borehole, then insert the baffle into the casing gap and grout between the casing and the rock wall;

[0079] Step Six: After drilling is completed, use the air pressure level on the filling machine to observe the air pressure in the lower coal seam goaf and the air pressure in the upper coal seam roadway. If they are the same, no adjustment of the air pressure is needed. If the air pressure in the goaf is greater than the air pressure in the upper coal seam roadway, close the adjustable ventilation opening and adjust the fan to rotate forward until the air pressure gauge and air pressure level show that the air pressure in the lower coal seam goaf is the same as the air pressure in the upper coal seam roadway. If the goaf air pressure is less than the roadway air pressure, close the adjustable ventilation opening, open the high-pressure nitrogen cylinder and high-pressure gas diffuser, and adjust the fan to rotate forward until the air pressure gauge and air pressure level show that the air pressure in the lower coal seam goaf is the same as the air pressure in the upper coal seam roadway.

[0080] Step 7: After the air pressure is adjusted, switch the valve in the filling chamber to connect the filling pump, pipeline 3, and filling machine. Connect the filling pipeline in the roadway to the upper joint of the filling chamber, start the filling pump and filling machine, and fill the goaf of the lower coal seam.

[0081] Step 8: After pressurizing and filling the borehole, rotate the hydraulic rod with the hydraulic motor to change the drilling angle to β degrees, and repeat steps 2 to 7 to complete the construction of the inclined borehole in the middle of the goaf.

[0082] Step 9: After pressurizing and filling the borehole, rotate the hydraulic rod with the hydraulic motor to change the drilling angle to α degrees, and repeat steps 2 to 7 to complete the construction of the inclined borehole for detecting the goaf area in front of the roadway.

[0083] Step 10: After all the work at one borehole point is completed, the roadway continues to advance to the next borehole point for drilling exploration, air pressure adjustment, and filling of the goaf.

[0084] Step 11: Repeat Step 10 until the upper coal seam mining roadway is completed.

[0085] Step 12: After one mining roadway in the upper coal seam is completed, another mining roadway is excavated following the same steps, and the goaf of the lower coal seam is filled.

[0086] The structure and operating principle of the "hydraulic pump", "flow control valve", "pressure control valve", "wind pressure level" and "high pressure gas diffuser" mentioned in this invention can be found in existing technologies.

[0087] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of protection claimed in this application.

Claims

1. A method for backfilling and mining close-range coal seams using an integrated drilling, adjustment, and backfilling equipment, characterized in that, Includes the following steps: a. Based on the conditions of the goaf in the lower coal seam, set reasonable drilling points and drilling sizes; b. Excavate a mining roadway in the upper coal seam and lay a filling pipeline in the excavated roadway. When the first drilling point is reached, stop the excavation and set up an integrated drilling, adjustment and filling equipment. The integrated drilling, adjustment and filling equipment includes a frame and a traveling mechanism located below the frame. The frame is equipped with a fan compartment, a nitrogen compartment, a filling compartment, a cuttings compartment, a hydraulic compartment, a hydraulic rod, a drilling rig and a filling machine. The nitrogen chamber is used to supply nitrogen to the fan chamber; the fan chamber is used to deliver the nitrogen supplied by the nitrogen chamber to the coal seam goaf with the airflow; the filling chamber is used to supply filling slurry to the filling machine; the cuttings chamber is used to collect the cuttings generated during the drilling process; the hydraulic chamber is used to provide power to the hydraulic rod; the hydraulic rod is used to control the movement of the drilling rig or the filling machine; the drilling rig drills holes by moving; the filling machine fills the coal seam goaf with slurry; the filling machine is equipped with an air pressure level gauge. c. Control the drilling rig to drill through the hydraulic rod until the drill bit passes through the rock strata between the upper and lower coal seams, and then pull out the drill bit; d. The filling machine is controlled by a hydraulic rod to extend into the borehole. A casing is installed around the drill bit of the drilling rig, and grouting is performed between the casing and the rock wall. e. After the drilling is completed, observe whether the air pressure in the lower coal seam goaf area is consistent with the air pressure in the upper coal seam roadway using the air pressure level instrument. Adjust the air pressure in the lower coal seam goaf area to be equal to the air pressure in the coal seam roadway. f. After the air pressure is adjusted, filler slurry is supplied to the filling machine through the filling chamber. The filling machine is then started to fill the goaf of the lower coal seam. g. After pressurizing and filling the borehole, adjust the angle of the drilling rig using the hydraulic rod, and repeat steps b to f to complete the construction of the inclined borehole in the middle of the goaf. h. After pressurizing and filling the borehole, adjust the angle of the drilling rig using a hydraulic rod, and repeat steps b to f to complete the construction of the inclined borehole for detecting the goaf area ahead of the roadway. i. After all the work at one borehole point is completed, the roadway continues to be excavated to the next borehole point for borehole exploration, air pressure adjustment and filling of the goaf. j. Repeat step i until one mining roadway in the upper coal seam is excavated; k. After one mining roadway in the upper coal seam is completed, another mining roadway is excavated according to the same steps, and the goaf of the lower coal seam is filled. A wind deflector is installed above the drilling rig. The wind deflector includes a front wind deflector, a top wind deflector, a rear wind deflector, and a shoulder wind deflector. The front wind deflector is located above the top wind deflector, and the shoulder wind deflectors are located on both sides of the equipment. Before adjusting the wind pressure, the front wind deflector and the shoulder wind deflector are rotated to the front and sides of the drilling rig and the filling machine to form a closed space to block the airflow. The nitrogen chamber includes a nitrogen chamber door, a high-pressure nitrogen cylinder, and a high-pressure gas diffuser, through which nitrogen is diffused to the fan chamber. The fan chamber is located above the nitrogen chamber and includes a fan, an adjustable ventilator one, and an adjustable ventilator two. The fan can rotate in both directions, and the adjustable ventilator one and the adjustable ventilator two are positioned opposite each other. An adjustable ventilation opening is provided in the rock cuttings chamber.

2. The method according to claim 1, characterized in that: In step a, a detection radar is used to investigate the situation of the goaf in the lower coal seam.

3. The method according to claim 1, wherein the method is characterized in that: The filling chamber is adjacent to the blower compartment. The filling chamber includes a filling chamber door, a filling pump, a first pipeline, and a valve. The first pipeline is connected to the filling machine, and the valve controls the opening and closing status of the second pipeline.

4. The method according to claim 1, wherein the method is characterized in that: The cuttings chamber and the hydraulic chamber are located on the same side of the filling chamber, with the cuttings chamber located above the hydraulic chamber. A certain amount of water is placed inside the cuttings chamber, and the drilling rig and the cuttings chamber are connected by a second pipe, with one end of the second pipe extending below the water inside the cuttings chamber.

5. The method according to claim 1, wherein the method is characterized in that: The hydraulic chamber includes a hydraulic oil tank, a hydraulic pump, a flow control valve, and a pressure control valve. The hydraulic pump is connected to a hydraulic rod.

6. The method according to claim 4, characterized in that: The drilling rig is located on one side of the integrated drilling, adjustment and charging equipment. The drilling rig includes a locking device and an annular air duct, which is connected to the pipeline. The locking device is used to fix the casing to the periphery of the drill bit.

7. The method according to claim 6, characterized in that: The hydraulic rod includes a horizontal rod 1, a horizontal rod 2, a vertical rod 1, a vertical rod 2, a vertical rod 3, a drilling rig connecting rod, a filling machine connecting rod, and a hydraulic rotating mechanism. The horizontal rod 1 and the horizontal rod 2 are parallel to each other. The vertical rod 1, the vertical rod 2, and the vertical rod 3 are arranged side by side and are all perpendicular to the horizontal rod 1 and the horizontal rod 2. The drilling rig connecting rod is located between the vertical rod 1 and the vertical rod 2, and the filling machine connecting rod is located between the vertical rod 2 and the vertical rod 3.

8. The method according to claim 1, wherein the drilling, regulating and filling integrated device is applied to the filling mining of the close distance coal seams. In step e, when the air pressure in the coal seam goaf is inconsistent with the air pressure in the upper coal seam roadway, if the air pressure in the coal seam goaf is greater than the air pressure in the upper coal seam roadway, the adjustable ventilation opening is closed, and the fan is adjusted to rotate forward until the air pressure in the coal seam goaf is consistent with the air pressure in the upper coal seam roadway; if the air pressure in the coal seam goaf is less than the air pressure in the upper coal seam roadway, the adjustable ventilation opening is closed, the high-pressure nitrogen cylinder and high-pressure gas diffuser are opened, and the fan is adjusted to rotate forward until the air pressure in the coal seam goaf is consistent with the air pressure in the upper coal seam roadway.

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